10,065 Liter V8 Engine Goes 8,300 MPH - Engine Simulator 

The biggest engine I've ever made in AngeTheGreat's Engine Simulator. It's so powerful that it can reach Mach 10.8 which also makes it my fastest engine. The dyno numbers are not accurate because it can't measure in excess of 10,000 Lb.-Ft. of torque. I'm not sure how much power it actually makes, but it's certainly more than 2,000,000 Lb.-ft. and around 950k HP. That's based on some tests I did with the max_clutch_torque values and some shaky assumptions.